Reading from the Synaxarion:

Martyrs Eustratius, Auxentius, Eugene, Mardarius, and Orestes of Greater Armenia

The Five Martyrs were from Greater Armenia. Like their ancestors, they worshipped Christ in secret; during the persecution of Diocletian, they presented themselves before the Forum authorities, and having been tormented in diverse manners, by Lysius the proconsul, three of them ended their lives in torments. As for Saints Eustratius and Orestes, they survived and were sent to Sebastia to Agricolaus, who governed the whole East; by his command these Saints, received their end as martyrs by fire in 296. Saint Auxentius was a priest. Saint Eustratius was educated and an orator; he was the foremost among Lysius' dignitaries and the archivist of the province. In the Synaxarion he is given the Latin title of scriniarius, that is, "keeper of the archives." The prayer, "Magnifying I magnify Thee, O Lord," which is read in the Saturday Midnight Service, is ascribed to him. In the Third Hour and elsewhere there is another prayer, "O Sovereign Master, God the Father Almighty," which is ascribed to Saint Mardarius.